Take One Number Away From Another Mathematically

This page is the CodyCross answer for the clue below from Larger than Life, Group 2150, Puzzle 4 (Social Justice).

Question is: Take One Number Away From Another Mathematically

and the answer is: SUBTRACT

Word Meaning:

SUBTRACT — (transitive, arithmetic) To remove or reduce; especially to reduce a quantity or number.

Definitions from Wiktionary.